ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,422, issued on June 17, was assigned to DONGGUAN DSP TECHNOLOGY Co. LTD. (Dongguan, China).
"Titanium surface treatment method" was invented by Guo Tie Long (Shenzhen, China) and Tan Yonggang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A titanium surface treatment method for manufacturing a polymer-titanium joint structure having excellent bond strength is provided. A titanium surface treatment method for bonding with a polymer composite includes a first etching step wherein the titanium surface is etched by acidic solution; a first surface treatment step wherein the titanium surface is treated by ultrasonic wave; a second etchin...